diff --git a/mslib/msui/wms_control.py b/mslib/msui/wms_control.py
index 9bece6451..d3fdb0502 100644
--- a/mslib/msui/wms_control.py
+++ b/mslib/msui/wms_control.py
@@ -1495,7 +1495,7 @@ def append_multiple_images(self, imgs):
                 current_height += image.height
 
             if max_height < result.height:
-                result.thumbnail((result.width, max_height), Image.ANTIALIAS)
+                result.thumbnail((result.width, max_height), Image.LANCZOS)
             return result